Hst
abbr. 超高音速运输机（Hypersonic Transporter）；高速试验机（High-Speed Tester）
🗣️ 情景例句
I've only been waiting for an hour.
我已经等了一个小时了。
He went to the post office to mail a letter.
他去了邮局寄信。
There is a table in the room.
客厅里有张桌子。